PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-16:28:10
G07     327.0          55.6               11.5 +/-    1.12      13.6 +/-    1.12  0.040 / 0.050
G08     109.4          51.0               13.1 +/-    0.95      16.3 +/-    0.95  0.050 / 0.060
G09     199.6          77.5               11.9 +/-    0.68      12.1 +/-    0.68  0.060 / 0.130
G11     148.9          10.6                0.9 +/-   29.16       2.5 +/-   29.16  0.070 / 0.100
G23     152.6          40.8               13.7 +/-    1.10      19.6 +/-    1.10  0.070 / 0.200
G27     58.4           33.2               11.3 +/-    1.10      18.5 +/-    1.10  0.070 / 0.210
G28     234.7          26.9               14.9 +/-    0.49      27.9 +/-    0.49  0.120 / 0.460
G30     299.6          33.4               11.4 +/-    1.29      18.6 +/-    1.29  0.220 / 0.640